The burly Patagonia Ultralight Black Hole Sling 8L is built to resist the rigors of the daily commute, the wear and tear of international travel, and dicey weather, even if they all happen at the same time. This go-anywhere sling bag carries the fundamentals of the day with all the comfort of a backpack, the convenience of a shoulder bag, and the ergonomic, low-profile performance of a courier's tote. The teardrop shape keeps the pack behind your shoulders, staying out of the way when you're moving through crowded streets and subway terminals. When you need to grab something from inside the pack, the asymmetrical harness lets you rotate the pack to the front for quick access. Two zippered compartments provide plenty of room for your essentials, and the convenient (and expandable) stretch pocket on the strap accommodates most phone sizes. When not in use, the highly packable Ultralight Black Hole® Sling rolls into its interior pocket. How convenient!